| // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion |
| /// void lockSync([ |
| /// FileLock mode = FileLock.exclusive, |
| /// int start = 0, |
| /// int end = -1 |
| /// ]) |
| /// Synchronously locks the file or part of the file. |
| /// . . . |
| /// Locks the byte range from start to end of the file, with the byte at position |
| /// end not included. If no arguments are specified, the full file is locked, If |
| /// only start is specified the file is locked from byte position start to the |
| /// end of the file, no matter how large it grows. It is possible to specify an |
| /// explicit value of end which is past the current length of the file. |
| /// |
| /// @description Checks that if only start is specified the file is locked from |
| /// byte position start to the end of the file, no matter how large it grows. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| import "../file_utils.dart"; |
| import "lock_check_1_lib.dart"; |
| |
| void check(int fLen) { |
| File file = getTempFileSync(); |
| asyncStart(); |
| var rf = file.openSync(mode: FileMode.write); |
| rf.writeFromSync(new List.filled(fLen, 1)); |
| var start = fLen >> 1; |
| rf.lockSync(FileLock.exclusive, start); |
| rf.writeFromSync(new List.filled(fLen, 2)); |
| String eScript = Platform.script.toString(); |
| var tests = [ |
| () => checkLocked(eScript, rf.path, start), |
| () => checkUnlocked(eScript, rf.path, 0, start), |
| () => checkLocked(eScript, rf.path, fLen, fLen + fLen) |
| ]; |
| Future.forEach(tests, (Function f) => f()).whenComplete(() { |
| asyncEnd(); |
| if (Platform.isWindows) { |
| rf.unlockSync(start); |
| } else { |
| rf.unlockSync(); |
| } |
| rf.closeSync(); |
| file.deleteSync(); |
| }); |
| } |
| |
| runMain() { |
| check(10); |
| check(100); |
| check(1000); |
| } |
| |
| main(List<String> args) { |
| if(args.length > 0) |
| runProcess(args); |
| else { |
| runMain(); |
| } |
| } |